Home
Class 11
PHYSICS
The moment of inertia about the symmetry...

The moment of inertia about the symmetry axis of a solid circular disc of radius r equals that of a hollow disc (same material and same mass) with internal and external radii r and R respectively. Then

A

R=1.189r

B

R=1.414r

C

R=1.257r

D

R=0

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Moment of Inertia

    MODERN PUBLICATION|Exercise Example|323 Videos

  • Gravitational potential and potential energy

    MODERN PUBLICATION|Exercise Exercise|17 Videos

  • Motion of Satellites

    MODERN PUBLICATION|Exercise Exercise|25 Videos

Similar Questions

Explore conceptually related problems

Derive the expression for moment of inertia of a circular disc about an axis tangential to the plane of the disc.

Fill ups The curved surface area of a hollow cylinder of height h with external and internal radius as R and r is……………. .

The moment of inertia of a solid sphere of density rho and radius R about its diameter is given by :

Derive the expression for moment of inertia of a circular disc about the diameter of the disc.

Moment of inertia of two spheres of equal radii are equal.One of the spheres is solid and has the mass 5 kg.What is the mass of the hollow sphere?

If a sphre of radius of 2r has the same volume as that of a cone with circular base of radius r, then find the height of the cone.

A satellite of mass 'm' is revolving in a circular orbit of radius 'r' around the earth of mass M. What is the total energy of the satellite?

A disc is recast into hollow and thin cylinder of same radius, which will have larger moment of inertia.

MODERN PUBLICATION-Moment of Inertia-Example
  1. The moment of inertia of a body does not depend upon

    Text Solution

    |

  2. The mass of a flywheel is concentrated at its rim so as to have

    Text Solution

    |

  3. The radius of gyration of a body having uniform distribution of mass i...

    Text Solution

    |

  4. If M is the mass of the disc and R is radius of gyration then moment o...

    Text Solution

    |

  5. The radius of gyration of a ring of radius R about an axis through its...

    Text Solution

    |

  6. Which of the following type of wheels of the same mass and radius will...

    Text Solution

    |

  7. Find the expression for moment of inertia of a thin uniform rod abou...

    Text Solution

    |

  8. Two circular disc have masses in the ratio 1:2 and diameter in the rat...

    Text Solution

    |

  9. Find the moment of inertia of a sphere about a tangent to the sphere, ...

    Text Solution

    |

  10. A homogeneous disc of mass 2 kg and radius 15 cm is rotating about its...

    Text Solution

    |

  11. If I, alpha and tau are moment of inertia, angular acceleration and t...

    Text Solution

    |

  12. The angular momentum of a body of moment of inertia I is L. its kineti...

    Text Solution

    |

  13. The total kinetic energy of a thin circular ring of mass M rolling on ...

    Text Solution

    |

  14. If a gymnast sitting on a rotating stool with his arms stretched sudde...

    Text Solution

    |

  15. A man is standing at the centre of a rotating turn table with his arms...

    Text Solution

    |

  16. Spokes are used in cycle wheel

    Text Solution

    |

  17. The moment of inertia about the symmetry axis of a solid circular disc...

    Text Solution

    |

  18. Statement 1. Two cylinders, one hollow (metal) and the other solid (wo...

    Text Solution

    |

  19. A sphere cannot roll on

    Text Solution

    |

  20. A disc is rolling, the velocity of its centre of mass is v(c.m.). Whic...

    Text Solution

    |